Answer:
The 95% confidence interval for μ for the given situation is between 87.49 and 94.51.
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 91 - 3.51 = 87.49
The upper end of the interval is the sample mean added to M. So it is 91 + 3.51 = 94.51
The 95% confidence interval for μ for the given situation is between 87.49 and 94.51.
Ok so I think I don’t know but I’m gonna guess ccccccccc
Answer:
17
Step-by-step explanation:
The first thing to do is plug in the numbers for the equation. Starting with:
[-20-(-3)]/(19-20)
When you answer that you simplify the answer to
(-20+3)/(19-20)
You answer what is in the parenthesis first.
(-17)/(-1)
After this step you simplify.
17.
The answer is seventeen because any number over 1 is just the number. For example, 3/1=3. The answer is positive because the negative in the numerator and denominator cancel eachother out. leaving the answer as 17.
Answer:
-20
Step-by-step explanation:
Absolute value is a number's distance from 0. It is always positive.
|-20|=20
|0|=0
|-10|=10
|10|=10
-20 has the greatest absolute value.
